In my grandfather's lab, scientists did independent research, and peers reviewed and commented on its merits. Politics, he taught me, had no place in the scientific process.

When I first ran for Congress in 1998, people counted me out.

Politicians in Washington and Madison aren't hearing, aren't listening to their constituents and prioritizing getting people back to work and growing our economy.

I’ve decided to run for the U.S. Senate because I believe Wisconsin families need a senator who will work hard to deliver results for the middle class - a leader with the courage to do what’s right, no matter how tough the odds or how powerful the special interests we have to fight.

In my grandfather's lab, scientists did independent research, and peers reviewed and commented on its merits. Politics, he taught me, had no place in the scientific process.

Our constitutional liberties shall not be sacrificed in our search for greater security, for that is what our enemies and all enemies of freedom and democracy hope to achieve.

Remember, there are two things that keep us oppressed: them and us. We are half of the equation. There will not be a magic day when we wake up and it's now OK to express ourselves publicly. We must make that day ourselves, by speaking out publicly -- first in small numbers, then in greater numbers, until it's simply the way things are and no one thinks twice. Never doubt that we will create this world, because, my friends, we are fortunate to live in a democracy, and in a democracy, we decide what's possible.